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Port Underwood Sea Temperature in May

Marlborough, New Zealand

April Port Underwood year-round → June

Average sea temperature for Port Underwood, New Zealand across May, based on 10 years of daily readings.

Average

14.3° C

High

16.15° C

Low

12.19° C

Water at this temperature is cold and will feel very cold initially, but the body will get used to it and longer swims are possible. Experienced swimmers can manage several hours of swimming, however hypothermia is still a real risk.

May is the 7th warmest of 12 months at Port Underwood.

Compared to April, May is 1.0° cooler than (15.29° C in April). By June the water is usually 13.37° C.

Port Underwood Day-by-Day Water Temperature in May

10-year low, average and high

11.5° C
12.9° C
14.3° C
15.6° C
17.0° C
1
5
10
15
20
25
31
Day-by-day low and high band with the 10-year daily average through May. Range Average

Each vertical bar above is one day of May. The shaded band covers the range the water has reached on that day across the last 10 years — the lowest reading at the bottom, the highest at the top. The line running through the bars is the daily average over those 10 years, so you can see the typical shape of the month at Port Underwood.

A narrow band means the temperature on that day has stayed close to the average year on year. A taller band means it has swung more, often because of changeable weather around that time of year. Hovering a day pulls up its low, average, and high.

May Water Temperature Table for Port Underwood

10-year daily averages

Day Average Low High
May 1 14.65° C 13.99° C 15.17° C
May 2 14.59° C 14° C 15.27° C
May 3 14.59° C 13.99° C 15.26° C
May 4 14.64° C 14.01° C 15.45° C
May 5 14.63° C 13.97° C 15.71° C
May 6 14.64° C 13.56° C 15.96° C
May 7 14.67° C 13.4° C 16.11° C
May 8 14.67° C 13.53° C 16.15° C
May 9 14.72° C 13.71° C 16.08° C
May 10 14.66° C 13.72° C 16.03° C
May 11 14.54° C 13.63° C 15.71° C
May 12 14.44° C 13.49° C 15.56° C
May 13 14.33° C 13.45° C 15.36° C
May 14 14.27° C 13.43° C 15.3° C
May 15 14.24° C 13.42° C 15.22° C
May 16 14.24° C 13.42° C 15.16° C
May 17 14.25° C 13.51° C 15.21° C
May 18 14.3° C 13.37° C 15.29° C
May 19 14.49° C 13.63° C 15.43° C
May 20 14.39° C 13.68° C 15.29° C
May 21 14.34° C 13.81° C 15.18° C
May 22 14.24° C 13.72° C 15.04° C
May 23 14.11° C 13.43° C 14.8° C
May 24 14.05° C 13.31° C 14.61° C
May 25 13.99° C 13.22° C 14.46° C
May 26 13.85° C 13° C 14.19° C
May 27 13.76° C 12.77° C 14.09° C
May 28 13.64° C 12.54° C 14.13° C
May 29 13.53° C 12.34° C 14.34° C
May 30 13.54° C 12.22° C 14.49° C
May 31 13.6° C 12.19° C 14.61° C

Where May Sits in the Year

May highlighted

9.5° C
12.1° C
14.8° C
17.4° C
20.0° C
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
16.24° C
16.69° C
16.01° C
15.29° C
14.3° C
13.37° C
12.45° C
12.14° C
12.53° C
13.18° C
14.38° C
15.52° C
10-year monthly history for Port Underwood. Bars span historical low to high; the line marks the monthly average. Range Average
January → February → March → April → May → June → July → August → September → October → November → December →

Nearby Locations in May

Compare other New Zealand water for the same month

Port Underwood Location

-41.3337, 174.0981

-41.33367, 174.09810 View on OpenStreetMap →

Port Underwood sits at -41.3337°N, 174.0981°E, on the coast of Marlborough, New Zealand. The marker on the map shows the spot the readings on this page come from. It usually sits a short distance from the town centre, out on the open water itself, so the numbers stay tied to the coast rather than a generic point inland.

Coastlines bend, headlands focus the water, and the temperature can run noticeably differently between two beaches that look close together on a map. Comparing nearby locations is a quick way to see how local geography is shaping the readings.

Nearest locations to Port Underwood